<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Nov 13, 2013 at 6:34 PM, luke.leighton <span dir="ltr"><<a href="mailto:luke.leighton@gmail.com" target="_blank">luke.leighton@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On Wed, Nov 13, 2013 at 11:16 PM, luke.leighton <<a href="mailto:luke.leighton@gmail.com">luke.leighton@gmail.com</a>> wrote:<br>
> <a href="http://rhombus-tech.net/community_ideas/router/news/" target="_blank">http://rhombus-tech.net/community_ideas/router/news/</a><br>
><br>
> uh... am i reading this right - that this router design could be up to<br>
> 20 watts?? 4x USB2 @ 500mA (10W), 1x RTL8366 (3W) and an EOMA68 CPU<br>
> Card (4W). That's.... a hell of a lot.<br>
><br>
> anyone any experience at dealing with that much power on small boards<br>
> (4 amp @ 5V) ?<br>
<br>
</div> LM1084? any guidance on PCB layout anyone aware of?<br>
<div class="HOEnZb"><div class="h5"><br>
l.<br></div></div></blockquote><div><br></div><div><br></div><div>Well, this will obviously be a 4 layer board, but I can say with the MEBv2, we had tremendous problems with thermal dissipation of the LM2576 at 9-12vdc, at 6vdc is was manageable, but the MEBv2++ are 2 layer boards, and with the addition of a secondary power plane, it would probably have been fine. For the most recent versions, we are using an AP6503a, and so far at 6, 9,12 vdc the heat is non-existent. Not to mention, the local price of the AP6503 was .60c cheaper than the LM2576, and is 85-95% more heat efficient. </div>
</div><div><br></div>-- <br><div dir="ltr"><div style="font-family:arial;font-size:small">Christopher Thomas</div><div style="font-family:arial;font-size:small">Firemoth Industries, LLC - Owner</div><div style="font-family:arial;font-size:small">
<a href="mailto:christopher@firemothindustries.com" target="_blank">christopher@firemothindustries.com</a></div><div style="font-family:arial;font-size:small"><span title="Call with Google Voice">214-458-5990</span></div>
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